贺西地区侏罗系油气地质特征与勘探前景

Petroleum Geology and Exploration Potential of Jurassic in Hexi Area

从分析贺西地区板块发展演化入手，剖析了该区侏罗系的油气地质背景，指出印支末期该区形成的３个规模较大的沉降带具有形成油气田的地质条件。该区侏罗系烃源岩厚度较大，油气资源丰富，具有较好的油气储集与封盖条件，侏罗系是本区油气勘探的重要领域。

Starting from an analysis of the plate-tectonic evolution of the area under study, this paper discusses the characteristics of petroleum geology of Jurassic in the area, and points out that the three subsidence belts formed at the end of Indosinian are geologically favorable for the formation of oil and gas fields. The Jurassic in this area developed thick and highly-potential source beds and good reservoir and sealing conditions, thus constituting an important target of exploration. On the basis of this work, the exploration potential of the area is predicted.